JPH0422941Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to a stand for an electric screwdriver used for tightening screws.

(Conventional technology) Conventionally, in the assembly process of electrical products, cameras, etc.
A worker is using an electric screwdriver on a workbench to perform assembly line work. Previously, the electric screwdriver used for this assembly work was either placed horizontally on the workbench, or hung from the ceiling with a string or with a string attached to a telescoping device. was.

(Problem to be solved by the invention) When using the electric screwdriver, it must be held perpendicular to the workbench.
That is, if the electric screwdriver is tilted, the engagement between the screwdriver and the head of the screw will not be sufficient, causing the screw to float or become loose. It is difficult to maintain the screwdriver vertically when operating it by simply placing the electric screwdriver on a workbench or hanging it from the ceiling with a string, as with conventional methods. . Therefore, even experienced workers may find that the screws float or become loose depending on their individual habits, and it is even more difficult for inexperienced workers to hold the screwdriver vertically.
In addition, the operator bears the entire weight of the electric screwdriver, which is undesirable as it causes a lot of fatigue.

In view of the above points, this invention allows the electric screwdriver to be used in a vertical position at all times, and furthermore, the entire weight of the electric screwdriver is not transferred to the operator's hands, making it easy and accurate even for beginners. The purpose of the present invention is to provide a new electric screwdriver stand that can perform screw tightening work.

(Means for solving the problem) For this reason, in this invention, a bush is mounted on an upright cylinder so that it can rotate and move up and down, and this bush is elastically supported by a spring supported on the cylinder. , a first horizontal arm is fixed to the bush, a second horizontal arm is connected to the tip of the first horizontal arm by a pin, and an electric screwdriver holder is also connected to the tip of the second horizontal arm by a vertical pin. , the electric screwdriver holder that vertically supports the electric screwdriver can be rotated only in the horizontal direction around the vertical pin.

(Example) The details of the present invention will be explained below with reference to preferred embodiments shown in the drawings.

In the figure, reference numeral 1 denotes a board, which is placed on a workbench (not shown), and the workpiece is placed on this board to work.
A post erecting metal fitting 2 is fixed to the end of this board 1 with a bottle nut, and a column 3 is erected on this metal fitting 2. A spring stopper 4 is fixed at an intermediate position of the cylinder 3, and the lower end of a spring 5 made of a wound spring is stopped.

In the figure, reference numeral 6 denotes a bush rotatably and vertically movable mounted on the upper part of the cylinder 3. As shown in FIG. It is designed to move downward against the expansion elasticity of 5.

A first horizontal arm 8 is horizontally fixed to the bush 6, and a second horizontal arm 9 is connected with a pin 10 to the tip of the first horizontal arm 8. This pin connection 10 has a radial ball bearing 11 and a thrust ball bearing 12 interposed therebetween so that it can rotate extremely smoothly at this pin connection position.

Furthermore, in the figure, reference numeral 13 denotes an electric screwdriver holder, which is connected with a pin 10 to the tip of the second horizontal arm 9, and has a radial ball bearing 11 and a thrust ball bearing 12 similar to the pin connection between the first and second arms.
is provided so that the holder 13 can rotate extremely smoothly with respect to the second arm 9. The pins 10 connected to each other are all vertical pins, and not only the first and second horizontal arms but also the electric screwdriver holder 13 can be rotated only in the horizontal direction around the vertical pins 10.

An electric screwdriver 14 is vertically fixed to this electric screwdriver holder 13.

In addition, numeral 15 in the figure is a cord holder fixed and erected in the middle of the first horizontal arm 8, and holds the cord of the electric screwdriver 14. Further, reference numeral 17 denotes a stopper which is made upright by extending the opposite end of the cord holder 15, and is connected to the second horizontal arm 8 with respect to the first horizontal arm 8.
When the arm 9 bends too much, it hits this horizontal second arm 9 and stops.

When tightening screws using the stand of the present invention constructed as described above, the workpiece is placed on the board 1, the worker holds the electric screwdriver 14, and then the cylinder 3 is tightened. Regarding the center rotation direction and the front-back direction, the electric screwdriver 14 can be moved extremely lightly and smoothly to any location by the rotation of the bush 6 and the rotation at each of the 10 pin connection points. Moreover, this movement allows the electric driver 14 to be moved while always maintaining the vertical state.

In this way, the electric screwdriver 14 is positioned directly above the screw tightening position, and when the electric screwdriver 14 is lowered while being held, the electric screwdriver 14 moves downward while maintaining the vertical position against the elasticity of the spring 5, and the screw tightening is performed. can be done accurately.

(Effects of the invention) As mentioned above, by using the stand of this invention, the electric screwdriver is always held vertically, so the screws can always be tightened accurately without bending, and this prevents the screws from lifting or screwing up. Has great advantages. Since the electric screwdriver is always held vertically, even beginners can perform accurate screw tightening work. Furthermore, since the electric screwdriver is supported through spring elasticity, the electric screwdriver does not bear the full weight of the electric screwdriver, which, in conjunction with the above-mentioned accurate screw tightening work, also has the effect of reducing operator fatigue. .

[Brief explanation of the drawing]

The drawings show a preferred embodiment of the present invention; FIG. 1 is a perspective view thereof, and FIG. 2 is an exploded perspective view thereof. 3...Cylinder, 5...Spring, 6...Button, 8...Horizontal first arm, 9...Horizontal second arm, 13...Electric screwdriver holder, 14...
electric screwdriver.

Claims (1)

[Scope of utility model registration request] A bush is mounted on an upright cylinder so as to be rotatable and movable up and down, the bush is elastically supported by a spring supported on the cylinder, a first horizontal arm is fixed to the bush, and the first horizontal arm is fixed to the bush. A horizontal second arm is pin-connected to the tip of the horizontal second arm using a vertical pin, and an electric screwdriver holder is also pin-connected to the tip of the horizontal second arm using a vertical pin. An electric screwdriver stand characterized by being able to rotate only in the horizontal direction around a pin.